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1. Developing an extreme learning machine based approach to weed segmentation in pastures

Author

Jonathan Ford, Edmund Sadgrove, and David Paul

Subjects
Extreme learning machine, Semantic segmentation, Weed detection, Computer vision, Precision agriculture, Feature extraction, Agriculture (General), S1-972, Agricultural industries, HD9000-9495
Abstract

Effective weed management in pastures is critical for maintaining the productivity of grazing land. Autonomous ground vehicles (AGVs) are increasingly being considered for weed localization and treatment in agricultural land. Weeds, however, can be difficult to distinguish from background plants, due to similarities in colour, shape and texture. While deep learning approaches can be used to solve the localization issue, they are computationally expensive, and require a large volume of training images in order to combat overfitting. In this paper we present a novel Extreme Learning Machine based network for segmenting weeds from the background pasture. The proposed method utilizes a combination of LBP, HOG and colour features, and is tested on four small datasets, achieving a high mean Intersection over Union of 87.1, 79.5, 81.6 and 87.6 for Bathurst burr, horehound, thistle and serrated tussock respectively.

Published
2023
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2. Neurologic Manifestations of Severe Acute Respiratory Syndrome Coronavirus 2 Infection in Hospitalized Patients During the First Year of the COVID-19 Pandemic

Author

Anna M. Cervantes-Arslanian, MD, Chakradhar Venkata, MD, Pria Anand, MD, Joseph D. Burns, MD, Charlene J. Ong, MD, Allison M. LeMahieu, MS, Phillip J. Schulte, PhD, Tarun D. Singh, MD, Alejandro A. Rabinstein, MD, Neha Deo, BS, Vikas Bansal, MBBS, MPH, Karen Boman, BS, Juan Pablo Domecq Garces, MD, Donna Lee Armaignac, PhD, APRN, Amy B. Christie, MD, Roman R. Melamed, MD, Yasir Tarabichi, MD, MSCR, Sreekanth R. Cheruku, MD, MPH, Ashish K. Khanna, MD, FCCP, FCCM, FASA, Joshua L. Denson, MD, MS, Valerie M. Banner-Goodspeed, MPH, Harry L. Anderson, III, MD, FACS, FICS, FCCM, FCCP, FAIM, Ognjen Gajic, MD, MS, Vishakha K. Kumar, MD, MBA, Allan Walkey, MD, Rahul Kashyap, MD, MBA, on behalf of the Society of Critical Care Medicine Discovery Viral Infection and Respiratory Illness Universal Study (VIRUS): COVID-19 Registry Investigator Group, Jean-Baptiste Mesland, Pierre Henin, Hélène Petre, Isabelle Buelens, Anne-Catherine Gerard, Philippe Clevenbergh, Rolando Claure-Del Granado, Jose A. Mercado, Esdenka Vega-Terrazas, Maria F. Iturricha-Caceres, Ruben Garza, Eric Chu, Victoria Chan, Oscar Y Gavidia, Felipe Pachon, Yeimy A Sanchez, Danijel knežević, Mohamed El Kassas, Mohamed Badr, Ahmed Tawheed, Hend Yahia, Dimitrios Kantas, Vasileios Koulouras, Estela Pineda, Gabina María Reyes Guillen, Helin Archaga Soto, Ana Karen Vallecillo Lizardo, Csaba Kopitkó, Ágnes Bencze, István Méhész, Zsófia Gerendai,, Girish Vadgaonkar, Rekha Ediga, Shilpa Basety, Shwetha Dammareddy, Phani Sreeharsha Kasumalla, Smitha S. Segu, Tuhin Chakraborty, Epcebha Joyce, Sridhar Papani, Mahesh Kamuram, Mradul Kumar Daga, Munisha Agarwal, Ishan Rohtagi, Anusha Cherian, Sreejith Parameswaran, Magesh Parthiban, Phaneendra Doddaga, Neethi Chandra, Puneet Rijhwani, Ashish Jain, Aviral Gupta, Ram Mohan Jaiswal, Ambika Tyagi, Nimish Mathur, Madhav Prabhu, Vishal Jakati, Mukur Petrolwala, Bharat Ladva, Surapaneni Krishna Mohan, Ekambaram Jyothisree, Umamaheswara Raju, Janaki Manduva, Naresh Kolakani, Shreeja Sripathi, Sheetal Chaitanya, Kamlesh Kumar Agrawal, Vijendra Baghel, Kirti Kumar Patel, Nooshin Dalili, Mohsen Nafa, Wataru Matsuda, Reina Suzuki, Michihito Kyo, Shu Tahara, Mineji Hayakawa, Kunihiko Maekawa, Masamitsu Sanui, Sho Horikita, Yuki Itagaki, Akira Kodate, Yuki Takahashi, Koyo Moriki, Takuya Shiga, Yudai Iwasaki, Hidenobu Shigemitsu, Yuka Mishima, Nobuyuki Nosaka, Michio Nagashima, Abdulrahman Al-Fares, Rene Rodriguez-Gutierrez, Jose Gerardo Gonzalez-Gonzalez, Alejandro Salcido-Montenegro, Adrian Camacho-Ortiz, Mariana Janeth Hermosillo Ulloa, Fatimah Hassan-Hanga, Hadiza Galadanci, Abubakar Shehu Gezawa, Halima M. S. Kabara, Taiwo Gboluwaga Amole, Halima Kabir, Dalha Gwarzo Haliru, Abdullahi S Ibrahim, Muhammad Sohaib Asghar, Mashaal Syed, Syed Anosh Ali Naqvi, Igor Borisovich Zabolotskikh,, Konstantin Dmitrievich Zybin, Sergey Vasilevich Sinkov, Tatiana Sergeevna Musaeva, Razan K Alamoudi, Hassan M. AlSharif, Sarah A. Almazwaghi, Mohammed S Elsakran, Mohamed A Aid, Mouaz A Darwich, Omnia M Hagag, Salah A Ali, Alona rocacorba, Kathrine Supeña, Efren Ray Juane, Jenalyn Medina, Jowany Baduria, Marwa Ridha Amer, Mohammed Abdullah, Bawazeer, Talal I. Dahhan, Eiad Kseibi, Abid Shahzad Butt, Syed Moazzum Khurshid, Muath Rabee, Mohammed Abujazar, Razan Alghunaim, Maal Abualkhair, Abeer Turki AlFirm, Yaseen M Arabi, Sheryl Ann Abdukahil, Mohammed A Almazyad, Mohammed I Alarifi, Jara M Macarambon, Ahmad Abdullah Bukhari, Hussain A. Albahrani, Kazi N Asfina, Kaltham M Aldossary, Marija Zdravkovic, Zoran Todorovic, Viseslav Popadic, Slobodan Klasnja, Ana Andrijevic, Srdjan Gavrilovic, Vladimir Carapic, Bojan Kovacevic, Jovana Bojicic, Stevanovic Predrag, Dejan S Stojakov, Duska K Ignjatovic, Suzana C Bojic, Marina M Bobos, Irina B Nenadic, Milica S Zaric, Marko D Djuric, Vladimir R Djukic, Santiago Y. Teruel, Belen C. Martin, Uluhan Sili, Huseyin Bilgin, Pinar Ay, Varsha P Gharpure, Usman Raheemi, Kenneth W. Dodd, Nicholas Goodmanson, Kathleen Hesse, Paige Bird, Chauncey Weinert, Nathan Schoenrade, Abdulrahman Altaher, Esmael Mayar, Matthew Aronson, Tyler Cooper, Monica Logan, Brianna Miner, Gisele Papo, Eric M. Siegal, Phyllis Runningen, Suzanne Barry, Christopher Woll, Gregory Wu, Erin Carrole, Kathryn Burke, Mustafa Mohammed, Roman R. Melamed, David M. Tierney, Love A. Patel, Vino S. Raj, Barite U. Dawud, Narayana Mazumder, Abbey Sidebottom, Alena M. Guenther, Benjamin D. Krehbiel, Nova J. Schmitz, Stacy L. Jepsen, Lynn Sipsey, Anna Schulte, Whitney Wunderlich, Cecely Hoyt, Abhijit A Raval, Andrea Franks, Katherine Irby, Ronald C. Sanders, Jr., Glenda Hefley, Jennifer M. Jarvis, Anmol Kharbanda, Sunil Jhajhria, Zachary Fyffe, Stephen Capizzi, Bethany Alicie, Martha Green, Lori Crockarell, Amelia Drennan, Kathleen Dubuque, Tonya Fambrough, Nikole Gasaway, Briana Krantz, Peiman Nebi, Jan Orga, Margaret Serfass, Alina Simion, Kimberly Warren, Cassie Wheeler, CJ Woolman, Amy B. Christie, Dennis W. Ashley, Rajani Adiga, Andrew S. Moyer, George M. Verghese, Andrea Sikora Newsome, Christy C. Forehand, Rebecca Bruning, Timothy W. Jones, Moldovan Sabov, Fatema Zaidi, Fiona Tissavirasingham, Dhatri Malipeddi, Jarrod M Mosier, Karen Lutrick, Beth Salvagio Campbell, Cathleen Wilson, Patrick Rivers, Jonathan Brinks, Mokenge Ndiva Mongoh, Boris Gilson, Donna Lee Armaignac, Don Parris, Maria Pilar Zuniga, Ilea Vargas, Viviana Boronat, Anneka Hutton, Navneet Kaur, Prashank Neupane, Nohemi Sadule-Rios, Lourdes M. Rojas, Aashish Neupane, Priscilla Rivera, Carlos Valle Carlos, Gregory Vincent, Mahesh Amin, Mary E Schelle, Amanda Steadham, Christopher M Howard, Cameron McBride, Jocelyn Abraham, Orlando Garner, Katherine Richards, Keegan Collins, Preethi Antony, Sindhu Mathew, Valerie C. Danesh, Gueorgui Dubrocq, Amber L. Davis, Marissa J Hammers, ill M. McGahey, Amanda C. Farris, Elisa Priest, Robyn Korsmo, Lorie Fares, Kathy Skiles, Susan M. Shor, Kenya Burns, Corrie A Dowell, Gabriela “Hope” Gonzales, Melody Flores, Lindsay Newman, Debora A Wilk, Jason Ettlinger, Jaccallene Bomar, Himani Darji, Alejandro Arroliga, Alejandro C Arroliga, Corrie A. Dowell, Gabriela Hope Conzales, Debora A. Wilk, Paras B. Khandhar, Elizabeth Kring, Valerie M. Banner-Goodspeed, Somnath Bose, Lauren E. Kelly, Melisa Joseph, Marie McGourty, Krystal Capers, Benjamin Hoenig, Maria C. Karamourtopoulos, Anica C. Law, Elias N. Baedorf Kassis, Allan J. Walkey, Sushrut S. Waikar, Michael A. Garcia, Mia Colona, Zoe Kibbelaar, Michael Leong, Daniel Wallman, Kanupriya Soni, Jennifer Maccarone, Joshua Gilman, Ycar Devis, Joseph Chung, Munizay Paracha, David N. Lumelsky, Madeline DiLorenzo, Najla Abdurrahman, Shelsey Johnson, Maj Andrew M. Hersh, CPT Stephanie L Wachs, Brittany S. Swigger, Stephanie L Wachs, Capt Lauren A. Sattler, Capt Michael N. Moulton, Kimberly Zammit, Patrick, J McGrath, William Loeffler, Maya, R. Chilbert, Aaron S. Miller, Edwin L. Anderson, Rosemary Nagy, Ravali R. Inja, Pooja A. Nawathe, Isabel Pedraza, Jennifer Tsing, Karen Carr, Anila Chaudhary, Kathleen Guglielmino, Raghavendra Tirupathi, Alymer Tang, Arshad Safi, Cindy Green, Jackie Newell, Rayan E. Ihle, Shelda A. Martin, Elaine A. Davis, Katja M. Gist, Imran A Sayed, John Brinton, Larisa Strom, Kathleen Chiotos, Allison M. Blatz, Giyoung Lee, Ryan H. Burnett, Guy I. Sydney, Danielle M. Traynor, Karissa Nauert, Annika Gonzalez, Mariel Bagley, Anita Santpurkar, Salim Surani, Joshua White, Aftab Khan, Rahul Dhahwal, Sreekanth Cheruku, Farzin Ahmed, Christopher Deonarine, Ashley Jones, Mohammad-Ali Shaikh, David Preston, Jeanette Chin, Vidula Vachharajani, Abhijit Duggal, Prabalini Rajendram, Omar Mehkri, Siddharth Dugar, Michelle Biehl, Gretchen Sacha, Stuart Houltham, Alexander King, Kiran Ashok, Bryan Poynter, Mary Beukemann, Richard Rice, Susan Gole, Valerie Shaner, Adarsh Conjeevaram, Michelle Ferrari, Narendrakumar Alappan, Steven Minear, Jaime Hernandez-Montfort, Syed Sohaib Nasim, Ravi Sunderkrishnan, Debasis Sahoo, Patrick S. Milligan, Sandeep K. Gupta, Joy M. Koglin, Regina Gibson, Lana Johnson, Felicia Preston, Crimson Scott, Bethany Nungester, Dana D Byrne, Christa A Schorr, Katie Grant, Katherine L Doktor, Maura C Porto, Olga Kaplan, James E. Siegler, III, Brian Schonewald, Ashley Woodford, Alan Tsai, Savina Reid, Kuntal Bhowmick, Saba Daneshpooy, Cyrus Mowdawalla, Trishna Akshay Dave, Wilhemina Kennedy, Connor Crudeli, Christopher Ferry, Long Nguyen, Sneha Modi, Niharika Padala, Pavan Jitendra Patel, Belle Lin, Lena Chatterjee, Jamie Qiuyun, Fan Mandi Liu, Rasagna Kota, Annesha Banerjee, Steven K. Daugherty, Sam Atkinson, Kelly Shrimpton, Sidney Ontai, Brian Contreras, Uzoma Obinwanko, Nneka Amamasi, Amir Sharafi, Sarah Lee, Zahia Esber, Chetna Jinjvadia, Raquel R Bartz, Vijay Krishnamoorthy, Bryan Kraft, Aaron Pulsipher, Eugene Friedman, Sachin Mehta, Margit Kaufman, Gregg Lobel, Nisha Gandhi, Amr Abdelaty, Elizabeth Shaji, Kiana Lim, Juan Marte, Dani Ashley Sosa, David P. Yamane, Ivy Benjenk, Nivedita Prasanna, Nicholas Perkins, Prera J. Roth, Banu Sivaraj, Haley Fulton, Madison G Herin, Marissa Crum, Morgan E. Fretwell, Emily-Rose Zhou, Christine Waller, Kara Kallies, Jonean Thorsen, Alec Fitzsimmons, Haley Olsen, Heda R. Dapul, Sourabh Verma, Alan Salas, Ariel Daube, Michelle Korn, Michelle Ramirez, Logi Rajagopalan, Laura Santos, Héctor Collazo Santiago, Ricardo Alan Hernandez, Norma Smalls, Asher G Bercow, Mark Shlomovich, Christine Crandall, Sasko Stojanovski, Kristin Johnson, Kelly Michienzi, Steven Q. Davis, Valentina Jovic, Max Masuda, Amanda Hayes, Katharine Nault, Michael Smith, William Snow, Riley Liptak, Hannah Durant, Valerie Pendleton, Alay Nanavati, Risa Mrozowsk, Namrata Nag, Jeff Brauer, Ashwin Dharmadhikari, Sahib Singh, Franco Laghi, Ghania Naeem, Andrew Wang, Kevin Bliden, Amit Rout, Jaime Barnes, Martin Gesheff, Asha Thomas, Melbin Thomas, Alicia R. Liendo, Jovan Milosavljevic, Kenan Abbasi, Nicholas B. Burley, Nicole Rapista, Samuel Amankwah, Sanjay K Poude, Saroj Timilsina, Sauradeep Sarkar, Oluwasayo Akinyosoye, Shashi K. Yalamanchili, Sheena Moorthy, Sonia Sugumar, Jonathan Ford, Martin C. Taylor, Charlotte Dunderdale, Alyssa Henshaw, Mary K. Brunk, Jessica Hagy, Shehryar Masood, Sushrutha Sridhar, Yuk Ming Liu, Sarah Zavala, Esther Shim, Ronald A. Reilkoff, Julia A. Heneghan, Sarah Eichen, Lexie Goertzen, Scott Rajala, Ghislaine Feussom, Ben Tang, Christine C. Junia, Robert Lichtenberg, Hasrat Sidhu, Diana Espinoza, Shelden Rodrigues, Maria Jose Zabala, Daniela Goyes, Ammu Susheela, Buddhi Hatharaliyadda, Naveen Rameshkumar, Amulya Kasireddy, Genessis Maldonado, Lisseth Beltran, Akshata Chaugule, Hassan Khan, Namrata Patil, Ruhi Patil, Rodrigo Cartin-Ceba, Ayan Sen, Fahimeh Talaei, Rahul Kashyap, Juan Pablo Domecq, Ognjen Gajic, Vikas Bansal, Aysun Tekin, Amos Lal, John C. O’Horo, Neha N. Deo, Mayank Sharma, Shahraz Qamar, Romil Singh, Diana J. Valencia Morales, Abigail T. La Nou, Marija Bogojevic, Simon Zec, Devang Sanghavi, Pramod Guru, Pablo Moreno Franco, Karthik Gnanapandithan, Hollie Saunders, Zachary Fleissner, Juan Garcia, Alejandra Yu Lee Mateus, Siva Naga Yarrarapu, Nirmaljot Kaur, Abhisekh Giri, Mohammed Mustafa Hasan, Ashrita Donepudi, Syed Anjum Khan, Nitesh Kumar Jain, Thoyaja Koritala, Alexander Bastidas, Gabriela Orellana, Adriana Briceno Bierwirth, Eliana Milazzo, Juan Guillermo Sierra, Thao Dang, Rahul S Nanchal, Paul A Bergl, Jennifer L Peterson, Jessica Timmer, Kimberly Welker, Travis Yamanaka, Nicholas A. Barreras, Michael Markos, Anita Fareeduddin, Rohan Mehta, Chakradhar Venkata, Miriam Engemann, Annamarie Mantese, Yasir Tarabichi, Adam Perzynski, Christine Wang, Dhatri Kotekal, Adriana C Briceno Bierwirth, Gabriela M Orellana, Gerardo Catalasan, Shohana Ahmed, Carlos F Matute, Ahmad Hamdan, Ivania Salinas, Genesis Del Nogal, Angel Tejada, Anna Eschler, Mary Hejna, Emily Lewandowski, Kristen Kusmierski, Clare Martin, Jen-Ting Chen, Aluko Hope, Zoe Tsagaris, Elise Ruen, Aram Hambardzumyan, Nasar A Siddiqi, Lesly Jurado, Lindsey Tincher, Carolyn Brown, Prithvi Sendi, Meghana Nadiger, Balagangadhar Totapally, Bhagat S. Aulakh, Sandeep Tripathi, Jennifer A. Bandy, Lisa M. Kreps, Dawn R. Bollinger, Neha Gupta, Brent R Brown, Tracy L Jones, Kassidy Malone, Lauren A Sinko, Amy B Harrell, Shonda C Ayers, Lisa M Settle, Taylor J Sears, Roger Scott Stienecker, Andre G. Melendez, Tressa A. Brunner, Sue M Budzon, Jessica L. Heffernan, Janelle M. Souder, Tracy L. Miller, Andrea G. Maisonneuve, Roberta E. Redfern, Jessica Shoemaker, Jennifer Micham, Lynn Kenney, Gabriel Naimy, Victoria Schauf, Sara Utley, Holly Balcer, Kerry P. J. Pulver, Jennifer Yehle, Alicia Weeks, Terra Inman, Majdi Hamarshi, Jeannette Ploetz, Nick Bennett, Kyle Klindworth, Moustafa Younis, Adham Mohamed, Brian L. Delmonaco, Anthony Franklin, Mitchell Heath, Diane Barkas, Antonia L. Vilella, Sara B. Kutner, Kacie Clark, Danielle Moore, Shina Menon, John K McGuire, Deana Rich, Harry L. Anderson, III, Dixy Rajkumar, Ali Abunayla, Jerrilyn Heiter, Howard A. Zaren, Stephanie J. Smith, Grant C. Lewis, Lauren Seames, Cheryl Farlow, Judy Miller, Gloria Broadstreet, John Lin, Cindy Terrill, Brock Montgomery, Sydney Reyes, Summer Reyes, Alex Plattner, Anthony Martinez, Micheal Allison, Aniket Mittal, Rafael Ruiz, Aleta Skaanland, Robert Ross, Umang Patel, Jordesha Hodge, Krunal Kumar Patel, Shivani Dalal, Himanshu Kavani, Sam Joseph, Michael A. Bernstein, Ian K. Goff, Matthew Naftilan, Amal Mathew, Deborah Williams, Sue Murdock, Maryanne Ducey, Kerianne Nelson, Jason Block, James Mitchel, Connor G O’Brien, Sylvan Cox, William Marx, Ioana Amzuta, Asad J. Choudhry, Mohammad T. Azam, Kristina L Carter, Michael A Olmos, Brittany M Parker, Julio Quintanilla, Tara A Craig, Brendon J Clough, Jeffrey T Jameson, Utpal S. Bhalala, Joshua Kuehne, Melinda Garcia, Morgan Beebe, Heather Herrera, Chris Fiack, Stephanie Guo, May Vawer, Beth Blackburn, Caleb Darby, Kristy Page, Amanda Brown, Jessie McAbee, Katherine A. Belden, Michael Baram, Devin M. Weber, Rosalie DePaola, Yuwei Xia, Hudson Carter, Aaron Tolley, Mary Barletta, Mark Steele, Laurie Kemble, Joshua L. Denson, A. Scott Gillet, Margo Brown, Rachael Stevens, Andrew Wetherbie, Kevin Tea, Mathew Moore, Abdurrahman Husain, Atul Malhotra, Qais Zawaydeh, Benjamin J Sines, Thomas J Bice, Emily A. Vail, Susannah Nicholson, Rachelle B. Jonas, AnnaRose E. Dement, William Tang, Mark DeRosa, Robert E. Villarreal, Rajany V. Dy, Alfredo Iardino, Jill Sharma, Richard Czieki, Julia Christopher, Ryan Lacey, Marwan Mashina, Kushal Patel, Erica C. Bjornstad, Nancy M. Tofil, Scott House, Isabella Aldana, Nikhil K. Meena, Jose D. Caceres, Nikhil K Meena, Sarenthia M. Epps, Harmeen Goraya, Kelsey R. Besett, Ryan James, Lana Y. Abusalem, Akash K. Patel, Lana S Hasan, Dina Gomaa, Michael Goodman, Devin Wakefield, Anthony Spuzzillo, John O. Shinn II, Robert MacLaren, Azra Bihorac, Tezcan Ozrazgat Baslanti, George Omalay, Haleh Hashemighouchani, Julie S. Cupka, Matthew M Ruppert, Patrick W. McGonagill, Colette Galet, Janice Hubbard, David Wang, Lauren Allan, Aditya Badheka, Madhuradhar Chegondi, Usman Nazir, Garrett Rampon, Jake Riggle, Nathan Dismang, Vicki Montgomery, Janice Sullivan, Sarah Morris, Jennifer Nason, Ozan Akca, Rainer Lenhardt, Rodrigo S. Cavallazzi, Ann Jerde, Alexa Black, Allison Polidori, Haily Griffey, Justin Winkler, Thomas Brenzel, Roger A. Alvarez, Amarilys Alarcon-Calderon, Marie Anne Sosa, Sunita K. Mahabir, Mausam J. Patel, Pauline Park, Andrew Admon, Sinan Hanna, Rishi Chanderraj, Maria Pliakas, Ann Wolski, Jennifer Cirino, Dima Dandachi, Hariharan Regunath, Maraya N. Camazine, Grant. E. Geiger, Abdoulie O. Njai, Baraa M. Saad, Faraaz Ali Shah, Byron Chuan, Sagar L. Rawal, Manal Piracha, Joseph E. Tonna, Nicholas M. Levin, Kayte Suslavich, Rachel Tsolinas, Zachary T. Fica, Chloe R. Skidmore, Renee D. Stapleton, Anne E. Dixon, Olivia Johnson, Sara S. Ardren, Stephanie Burns, Anna Raymond, Erika Gonyaw, Kevin Hodgdon, Chloe Housenger, Benjamin Lin, Karen McQuesten, Heidi Pecott-Grimm, Julie Sweet, Sebastian Ventrone, Nita Khandelwal, T. Eoin West, Ellen S. Caldwell, Lara Lovelace-Macon, Navya Garimella, Denisse B. Dow, Sreekanth R. Cheruku, Catherine Chen, Murtaza Akhter, Rania Abdul Rahman, Mary Mulrow, Erin M. Wilfong, Kelsi Vela, Ashish K. Khanna, Lynne Harris, Bruce Cusson, Jacob Fowler, David Vaneenenaam, Glen McKinney, Imoh Udoh, Kathleen Johnson, Patrick G. Lyons, Andrew P Michelson, Sara S. Haluf, Lauren M. Lynch, Nguyet M. Nguyen, Aaron Steinberg, Nicholas Braus, Vishwanath Pattan, Jessica Papke, Ismail Jimada, Nida Mhid, Samuel Chakola, Kevin Sheth, Abdalla Ammar, Mahmoud Ammar, Victor Torres Lopez, Charles Dela Cruz,, Akhil Khosla, and Samir Gautam

Subjects
Medical emergencies. Critical care. Intensive care. First aid, RC86-88.9
Abstract

OBJECTIVES:. To describe the prevalence, associated risk factors, and outcomes of serious neurologic manifestations (encephalopathy, stroke, seizure, and meningitis/encephalitis) among patients hospitalized with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. DESIGN:. Prospective observational study. SETTING:. One hundred seventy-nine hospitals in 24 countries within the Society of Critical Care Medicine Discovery Viral Infection and Respiratory Illness Universal Study COVID-19 Registry. PATIENTS:. Hospitalized adults with laboratory-confirmed SARS-CoV-2 infection. INTERVENTIONS:. None. RESULTS:. Of 16,225 patients enrolled in the registry with hospital discharge status available, 2,092 (12.9%) developed serious neurologic manifestations including 1,656 (10.2%) with encephalopathy at admission, 331 (2.0%) with stroke, 243 (1.5%) with seizure, and 73 (0.5%) with meningitis/encephalitis at admission or during hospitalization. Patients with serious neurologic manifestations of COVID-19 were older with median (interquartile range) age 72 years (61.0–81.0 yr) versus 61 years (48.0–72.0 yr) and had higher prevalence of chronic medical conditions, including vascular risk factors. Adjusting for age, sex, and time since the onset of the pandemic, serious neurologic manifestations were associated with more severe disease (odds ratio [OR], 1.49; p < 0.001) as defined by the World Health Organization ordinal disease severity scale for COVID-19 infection. Patients with neurologic manifestations were more likely to be admitted to the ICU (OR, 1.45; p < 0.001) and require critical care interventions (extracorporeal membrane oxygenation: OR, 1.78; p = 0.009 and renal replacement therapy: OR, 1.99; p < 0.001). Hospital, ICU, and 28-day mortality for patients with neurologic manifestations was higher (OR, 1.51, 1.37, and 1.58; p < 0.001), and patients had fewer ICU-free, hospital-free, and ventilator-free days (estimated difference in days, –0.84, –1.34, and –0.84; p < 0.001). CONCLUSIONS:. Encephalopathy at admission is common in hospitalized patients with SARS-CoV-2 infection and is associated with worse outcomes. While serious neurologic manifestations including stroke, seizure, and meningitis/encephalitis were less common, all were associated with increased ICU support utilization, more severe disease, and worse outcomes.

Published
2022
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3. A 3D-printed nasopharyngeal swab for COVID-19 diagnostic testing

Author

Jonathan Ford, Todd Goldstein, Sean Trahan, Allison Neuwirth, Kyle Tatoris, and Summer Decker

Subjects
Nasopharyngeal swab, COVID-19, 3D-printing, Point-of-care, Supply chain, Medical physics. Medical radiology. Nuclear medicine, R895-920
Abstract

Abstract The nasopharyngeal swab is a critical component of the COVID-19 testing kit. Supply chain remains greatly impacted by the pandemic. Teams from USF Health Radiology and Northwell Health System developed a 3D-printed stopgap alternative. This descriptive study details the workflow and provides guidance for hospital-based 3D printing labs to leverage the design to make a positive impact on the pandemic. Swab use is also outlined, and the early information regarding clinical use is described, including an ongoing multicenter trial methodology.

Published
2020
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4. Framework for Remote Sensing and Modelling of Lithium-Brine Deposit Formation

Author

Cristian Rossi, Luke Bateson, Maral Bayaraa, Andrew Butcher, Jonathan Ford, and Andrew Hughes

Subjects
Earth observation, geological remote sensing, lithium, brine, water balance, Salar de Uyuni, Science
Abstract

The demand for “green” metals such as lithium is increasing as the world works to reduce its reliance on fossil fuels. More than half of the world’s lithium resources are contained in lithium-brine deposits, including the salt flats, or “salars”, of the Andean region of South America, also known as the Lithium Triangle. The genesis of lithium-brine deposits is largely driven by the leaching of lithium from source rocks in watersheds, transport via groundwater systems to salars, and evaporative concentration in salars. The goal of this research is to create a consistent and seamless methodology for tracking lithium mass from its source in the watershed to its greatest concentration in the nucleus. The area of interest is in and around Bolivia’s Salar de Uyuni, the world’s largest salt flat. We explore how Li-brine deposits form, where the water and solute come from, how the brines are formed, and how abstraction affects the mass balance inside the salar. To support the entire system, open-source Earth observation (EO) data are analysed. We found that by constructing a flexible and repeatable workflow, the question of how lithium reaches the Salar de Uyuni can be addressed. The work demonstrated the importance of groundwater flow to the river network and highlighted the need for flow data for the main river supplying the salar with both water inflow and lithium mass.

Published
2022
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5. GEOVISUALIZAÇÃO EM AMBIENTES DE REALIDADE VIRTUAL E SUA APLICAÇÃO NA EXPLORAÇÃO MINERAL

Author

Patricia Procopio Calazans, Luiz Henrique Castiglione, Allan Büchi, Jose Sicoli Seoane, Bruce Napier, and Jonathan Ford

Subjects
Geography. Anthropology. Recreation, Cartography, GA101-1776
Abstract

Realidade Virtual é uma tecnologia de interface avançada entre o usuário e o sistema computacional, com o objetivo de simular a realidade com imersão em 3D, através de técnicas e equipamentos. Com base nestes conceitos foi desenvolvida a Metodologia SIGMA Vale, fruto de uma parceria entre Vale, Serviço Geológico Britânico (BGS) e Coffey, para integração de dados geológicos, geoquímicos, geofísicos, geoténicos e geográï¬cos em uma interface de visualização avançada de Realidade Virtual (RV), com subsídios de geotecnologia (VRGIS), permitindo uma navegação intuitiva, com interação em tempo real, e possibilitando a imersão do usuário do sistema no modelo gerado através do uso de equipamentos de RV. O modelo gerado, quando visualizado em modo Desktop RV (computador ou notebook) ou em uma Sala de Realidade Virtual, permite a geovisualização integrada de dados de superfície (ortofotos, imagens de satélite, modelos digitais de terreno, mapas geológicos, estruturas geológicas, localização de obras de pesquisa, pontos geológicos, limites de propriedades, polígonos dos direitos minerários, fotos, limites de áreas de proteção ambiental, parques, dentre vários outros) e subsuperfície (modelo geológico, geoquimico, geofísico, modelo de blocos, furos de sondagem, perï¬ s geológicos) que pode ser utilizada para diversos ï¬ ns, na exploração mineral, nas etapas de pré-campo, campo e pós-campo, como por exemplo: apresentação do projeto, suporte à tomada de decisões, planejamento de campanhas de estudos geológicos e de exploração mineral, reconhecimento virtual prévio de campo, mapeamento e interpretação geológicos e geofísicos, análise de impacto visual, consulta a banco de dados geográï¬ cos e análise visual de dados. O sistema foi customizado para coleta de dados geológicos em campo, com a utilização de um tablet com ARCGIS com o aplicativo SIGMA_Mobile (Caderneta Digital de Campo), que permite a interpretação geológica em tempo real (no campo), interagindo com o mapa geológico no ARCGIS, permitindo ainda a criação de stereonets no campo, a geração de perï¬ s geológicos e a interpretação de estruturas em fotos. As informações coletadas em campo são transferidas para o ambiente RV e integradas com dados de superfície e subsuperfície, permitindo uma análise mais rica, pela ampla integração de todos os dados e informações envolvidos, bem como pela natureza interdisciplinar da interface entre dados de diferentes temáticas.

Published
2016

6. Seismic amplitude response to internal heterogeneity of mass-transport deposits

Author

Jonathan Ford, Angelo Camerlenghi, Francesca Zolezzi, and Marilena Calarco

Subjects
Geophysics, Geochemistry and Petrology, Stratigraphy, Paleontology, Soil Science, Geology, Earth-Surface Processes
Abstract

Compared to unfailed sediments, mass-transport deposits are often characterised by a low-amplitude response in single-channel seismic reflection images. This “acoustic transparency” amplitude signature is widely used to delineate mass-transport deposits and is conventionally interpreted as a lack of coherent internal reflectivity due to a loss of preserved internal structure caused by mass-transport processes. In this study we examine the variation in the single-channel seismic response with changing heterogeneity using synthetic 2-D elastic seismic modelling. We model the internal structure of mass-transport deposits as a two-component random medium, using the lateral correlation length (ax) as a proxy for the degree of internal deformation. The average internal reflectivity is held approximately constant with increasing deformation by fixing the two component sediment lithologies to have realistic P-wave velocity and density based on sediment core measurements from the study area. For a controlled single-source synthetic model a reduction in observed amplitude with reduced ax is consistently observed across a range of vertical correlation lengths (az). For typical autonomous underwater vehicle (AUV) sub-bottom profiler acquisition parameters, in a simulated mass-transport deposit with realistic geostatistical properties, we find that when ax≈1 m, recorded seismic amplitudes are, on average, reduced by ∼25 % relative to unfailed sediments (ax≫103 m). We also observe that deformation significantly larger than core scale (ax>0.1 m) can generate a significant amplitude decrease. These synthetic modelling results should discourage interpretation of the internal structure of mass-transport deposits based on seismic amplitudes alone, as acoustically transparent mass-transport deposits may still preserve coherent, metre-scale internal structure. In addition, the minimum scale of heterogeneity required to produce a significant reduction in seismic amplitudes is likely much larger than the typical diameter of sediment cores, meaning that acoustically transparent mass-transport deposits may still appear well stratified and undeformed at core scale.

Published
2023

7. A 3D-printed nasopharyngeal swab for COVID-19 diagnostic testing

Author

Sean Trahan, Jonathan Ford, Todd Goldstein, Summer J. Decker, Allison Neuwirth, and Kyle Tatoris

Subjects
lcsh:Medical physics. Medical radiology. Nuclear medicine, 2019-20 coronavirus outbreak, 3d printed, 3D-printing, Coronavirus disease 2019 (COVID-19), business.industry, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), lcsh:R895-920, Biomedical Engineering, Diagnostic test, COVID-19, Supply chain, medicine.disease, Computer Science Applications, Workflow, Point-of-care, Pandemic, Technical Note, Medicine, Radiology, Nuclear Medicine and imaging, Nasopharyngeal swab, Medical emergency, business
Abstract

The nasopharyngeal swab is a critical component of the COVID-19 testing kit. Supply chain remains greatly impacted by the pandemic. Teams from USF Health Radiology and Northwell Health System developed a 3D-printed stopgap alternative. This descriptive study details the workflow and provides guidance for hospital-based 3D printing labs to leverage the design to make a positive impact on the pandemic. Swab use is also outlined, and the early information regarding clinical use is described, including an ongoing multicenter trial methodology.

Published
2020
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8. Implementation of 3D Printing in Medical Care for Preoperative Planning of Complex Ventricular Septal Defect

Author

Jonathan Ford, Fadi Matar, Summer J. Decker, Mina S. Mousa, and Todd R. Hazelton

Subjects
medicine.medical_specialty, Preoperative planning, business.industry, General surgery, education, medicine, Radiology, Nuclear Medicine and imaging, Cardiac Imaging, business, Medical care
Abstract

Three-dimensional (3D) modeling and printing in medicine have emerged to encompass every aspect of medical applications. This ranges from education, illustration, and treatment, as well as patient care whether for purposes of diagnosis or treatment and surgical planning. In the past few decades, these novel tools have shown promising utility to help radiologists and the medical team to improve quality of patient care and outcomes via 3D printing application and utilization. This workflow will be illustrated through a ventricular septal defect (VSD) case at which 3D analysis was critical in the assessment and treatment planning of the patient's underlying medical condition.

Published
2021

9. Bottom current-controlled quaternary sedimentation at the foot of the Malta Escarpment (Ionian Basin, Mediterranean)

Author

Jonathan Ford, Lorenzo Facchin, Angelo Camerlenghi, Vanni Munari, Renzo Mosetti, Aaron Micallef, and Michele Rebesco

Subjects
geography, Turbidity current, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, Continental shelf, Marine geophysics -- Mediterranean Region, Geology, Contourite, Escarpment, 010502 geochemistry & geophysics, Oceanography, 01 natural sciences, Paleontology, Seismites -- Mediterranean Region, Mediterranean sea, 13. Climate action, Geochemistry and Petrology, Paleoceanography, Oceanography -- Mediterranean Region, Sedimentary basins -- Mediterranean Region, Sedimentary rock, Bathymetry, 14. Life underwater, 0105 earth and related environmental sciences
Abstract

A better understanding of the evolution of bottom current circulation and associated deposits is significant for many applications including paleoclimatology and geological hazard. Besides the large contourite drifts, bottom currents may generate fields of large sediment waves that, depending on their height and velocity of migration, may pose severe risk for infrastructures. Conversely, the time span of their paleoceanographic record is generally relatively short. We use bathymetry data, sub-bottom and seismic reflection profiles and legacy oceanographic data to analyze the sediment waves occurring in a deep environment (from 2400 to 3800 m water depth at the foot of the Malta Escarpment in the Mediterranean Sea) to understand their evolution in time, their significance for paleoceanography, and their relation to present day hydrographic conditions. In the absence of direct stratigraphic information, we use the information from nearby studies and from ODP Site 964 and DSDP Site 374 to constrain the age of the sedimentary successions. We discover that these waves (about 2.5 km in wavelength, 50 m in height, with crest sub-perpendicular to the continental slope trend) have been steadily growing and migrating northward since about 500 ka, although an irregular growth and unsteady migration is distinguishable since about 1800 ka. The waves are generated by predominantly alongslope southward flowing bottom currents compatible with modern hydraulic conditions (mean flow speed of ~5 cm s−1, peaks of 15 cm s−1). The rate of crest migration (~ 2.0–3.2 mm a−1) and the average sedimentation rate (0.64–0.69 mm a−1) are unusually high for deep sea environments away from turbidity currents paths. We infer that the steady development of sediment waves is produced by a drastic increase in sediment input to the Ionian Basin resulting from the tectonic uplift in NE Sicily and Calabria and the onset of a relatively steady, low energy bottom current regime following the Mid-Pleistocene Transition. We attempt to extract information on orbital cyclicity preserved in the seismic record from the power spectra of virtual seismic traces from the well preserved succession of 5 visually discernible, regularly spaced sub-units consisting of alternation of high-amplitude and low-reflectivity packages within the last 500 ka. Peaks in the power spectra can be identified around orbital obliquity and precession periodicities, while eccentricity appears not to be recorded. We discuss the results of seismic cyclicity analysis relative to uncertainties of stratigraphic and petrophysical constraints. The sediment waves along the foot of the Malta escarpment are an excellent candidate for the extraction of a long, continuous and high resolution sedimentary record of the paleo circulation changes and climate cycles in the Mediterranean Sea since about 500 ka., peer-reviewed

Published
2021

10. How deep does sand deposits in the Alentejo basin (Gulf of Cadiz) reach? Evaluating slope stability from bottom-current activities through time

Author

Cristina Sanchez Serra, Pedro Brito, Claudio Lo Iacono, Rafael Bartolomé, Michele Rebesco, Benjamin Bellwald, Davide Mencaroni, Jaume Llopart, Eulàlia Gràcia, Jonathan Ford, Angelo Camerlenghi, Alcinoe Calahorrano, Roger Urgeles, and European Commission

Subjects
Current (stream), Slope stability, 14. Life underwater, Structural basin, Geomorphology, Geology
Abstract

European Geosciences Union (EGU) General Assembly 2020, 4-8 May 2020, Contourite deposits are generated by the interplay between deepwater bottom-currents, sediment supply and seafloor topography. The Gulf of Cadiz, in the Southwest Iberian margin, is a famous example of extensive contourite deposition driven by the Mediterranean Outflow Water (MOW), which exits the Strait of Gibraltar, flows northward following the coastline and distributes the sediments coming from the Guadalquivir and Guadiana rivers. The MOW and related contourite deposits affect the stability of the SW Iberian margin in several ways: on one hand it increases the sedimentation rate, favoring the development of excess pore pressure, while on the other hand, by depositing sand it allows pore water pressure to dissipate, potentially increasing the stability of the slope. In the Gulf of Cadiz, grain size distribution of contourite deposits is influenced by the seafloor morphology, which splits the MOW in different branches, and by the alternation of glacial and interglacial periods that affected the MOW hydrodynamic regimes. Fine clay packages alternates with clean sand formations according to the capacity of transport of the bottom-current in a specific area. Generally speaking, coarser deposits are found in the areas of higher MOW flow energy, such as in the shallower part of the slope or in the area closer to the Strait of Gibraltar, while at higher water depths the sedimentation shifts to progressively finer grain sizes as the MOW gets weaker. Previous works show that at present-day the MOW flows at a maximum depth of 1400 m, while during glacial periods the bottom-current could have reached higher depths. In this study we derived the different maximum depths at which the MOW flowed by analyzing the distribution of sands at different depths along the Alentejo basin slope, in the Northern sector of the Gulf of Cadiz. Here we show how changes in sand distribution along slope, within the stratigraphic units deposited between the Neogene and the present day, are driven by glacial – interglacial period alternation that influenced the hydrodynamic regime of the MOW. By deriving the depositional history of sand in the Alentejo basin, we are able to correlate directly the influence that climatic cycles had on the MOW activity. Furthermore, by interpreting new multi-channel seismic profiles we have been able to derive a detailed facies characterization of the uppermost part of the Gulf of Cadiz. An accurate definition of sand distribution along slope plays an important role in evaluating the stability of the slope itself, e.g. to understand if the sediments may be subjected to excess pore pressure generation. As sand distribution is a direct function of the bottom-current transport capacity, the ultimate goal of this study is to understand how climate variations can affect the stability of submarine slope by depositing contourite-related sand, This project has received funding from the European Union’sHorizon 2020 research and innovation programme under grantagreement No 721403

Published
2020

11. Research in forensic radiology and imaging; Identifying the most important issues

Author

Gregory G. Davis, Maurice C. G. Aalders, H. H. de Boer, Kurt B. Nolte, J.J. Dempers, Willemijn M. Klein, Summer J. Decker, Natalie L. Adolphi, Jonathan Ford, Bela Kubat, Edward L. Mazuchowski, Morio Iino, K. Wozniak, Peter Mygind Leth, Barry Daly, Michael J. Thali, R.R. van Rijn, Chandra Y. Gerrard, Paul A. M. Hofman, Gary M. Hatch, Christopher J. O'Donnell, Christina Jacobsen, MUMC+: DA BV Medisch Specialisten Radiologie (9), RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, Beeldvorming, MUMC+: DA Pat Obductie (9), Pathologie, University of Zurich, and van Rijn, R R

Subjects
MYOCARDIAL-ISCHEMIA, POSTMORTEM COMPUTED-TOMOGRAPHY, media_common.quotation_subject, Big data, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 340 Law, 610 Medicine & health, ComputingMilieux_LEGALASPECTSOFCOMPUTING, LONG BONES, 030218 nuclear medicine & medical imaging, Pathology and Forensic Medicine, 03 medical and health sciences, Presentation, All institutes and research themes of the Radboud University Medical Center, 0302 clinical medicine, 2741 Radiology, Nuclear Medicine and Imaging, Medicine, Profiling (information science), Radiology, Nuclear Medicine and imaging, 030216 legal & forensic medicine, Justice (ethics), media_common, Multimodal imaging, RICHARD III, geography, Summit, geography.geographical_feature_category, AGE ESTIMATION, IDENTIFICATION, business.industry, Other Research Radboud Institute for Health Sciences [Radboudumc 0], AUTOPSY, 10218 Institute of Legal Medicine, 2734 Pathology and Forensic Medicine, Forensic science, X-RAY, Forensic radiology, Engineering ethics, business, SUDDEN CARDIAC DEATH, CT
Abstract

This paper presents the outcome of the first international forensic radiology and imaging research summit, organized by the International Society of Forensic Radiology and Imaging, the International Association of Forensic Radiographers, the National Institute of Justice of the United States of America, and the Netherlands Forensic Institute. During this meeting, an international and multidisciplinary panel of forensic scientists discussed the current state of science in forensic radiology, and drafted a research agenda to further advance the field. Four groups for further research focus were identified: big data and statistics, identification and biological profiling, multimodal imaging, and visualization and presentation. This paper describes each of these research topics and thereby hopes to contribute to the development of this exciting new field of forensic medical science.

Published
2017
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13. Chapter 79 : Quality of Life after Esophagectomy.

Author

Finks, Jonathan Ford

Subjects
*ESOPHAGEAL cancer, *ESOPHAGEAL surgery, *ESOPHAGECTOMY, *QUALITY of life
Abstract

Chapter 79 of the book "Esophageal Cancer: Principles and Practice," edited by Blair A. Jobe, Charles R. Thomas, and John G. Hunter is presented. It discusses the effect of esophagectomy to the quality of life (QOL) of patients with esophageal cancer. It notes that this technique negatively affects most aspects of QOL associated to health.

Published
2009

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